VI Systems announces the availability VCSEL and photodetector chips for 100 Gbps data transmission per channel applying PAM-4 modulation. Engineering samples are available for 4-channel shortwave wavelength division multiplexing (SWDM). VCSEL chips are available at wavelengths of 850 nm, 880 nm, 910 nm and 940 nm. The photodetector D30-SWDM-C1 chip is available for 850 nm to 960 nm with an optical modulation bandwidth of 40GHz and a responsivity of 0.5mA/mW when coupled to 50 µm core multimode fiber. All chip samples can be offered as singlets or 4 x 1 linear arrays with a pitch of 250 µm.